花生壳和鸡粪复合基质中养分含量变化规律研究

以花生壳和鸡粪不同配比组成复合基质，以番茄为试材，采用桶培，在日光温室内研究了在栽培过程中基质内养分含量的变化规律．结果表明：在120d的时间内，基质中全氮含量的降幅为12．8％～16．9％，速效磷的降幅为6％～11％；全钾、镁的含量基本上呈直线下降趋势，全钾降幅为93％～95％，镁几乎被吸收干净；速效钾降幅从84％到90％、钙降幅从93％到95％，两者前期下降较快，后期下降速度变缓和，而全磷则呈上升趋势。另外，随着基质中鸡粪含量的增加，总氮、总钾和速效钾的降幅增大。基质中纤维素的含量前期下降迅速，而后期下降缓慢，其降解规律的曲线与基质中速效钾、钙和镁的含量的曲线相仿。

Study on Nutrient Concentration in Compound Substrate Composed of Peanut Shell and Chicken Manure

The nutrient concentration in compound substrate composed of peanut shell and chicken manure was studied by tomato planted in tub in greenhouse.The results indicated:The concentration of total nitrogen in substrates decreased from 12.8% to 16.9% in 120 days, available phosphoros was from 6% to 11%.The concentration of total potassium reduced by 93%-95%,the concentration of magnesium was very small at last.The range of reduction in concentration of available potassium was from 84% to 90%,and a 93%-95% reduct...